A proper causal model of human reliability analysis helps to account for human response behavior and lead to a more effective quantitative analysis. In this paper, we have proposed a hierarchical causal model of human reliability in accordance with the underlying reasons of human errors, with Bayesian network being used to build the causal link of all the different factors. And, then, with the hier- archical structure adopted in the model, the factors in each level would be only affected by the factors belonging to the upper levels. In addition...
